'\" t
.\"     Title: lsyncd
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Lsyncd
.\"    Source: Lsyncd 2.2.1
.\"  Language: English
.\"
.TH "LSYNCD" "1" "January 2017" "Lsyncd 2\&.2\&.1" "Lsyncd"
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.SH "NAME"
lsyncd \- a daemon to continuously synchronize directory trees
.SH "SYNOPSIS"
.PP
config file
.RS 4
\ \&
\fBlsyncd\fR
[\fIOPTIONS\fR]
\fICONFIG\-FILE\fR
.RE
.PP
default rsync behaviour
.RS 4
\ \&
\fBlsyncd\fR
[\fIOPTIONS\fR] \-rsync
\fISOURCEDIR\fR
\fITARGET\fR
\&...
.RE
.PP
default rync+ssh behaviour (moves and deletes through ssh)
.RS 4
\ \&
\fBlsyncd\fR
[\fIOPTIONS\fR] \-rsyncssh
\fISOURCEDIR\fR
\fITARGETHOST\fR
\fITARGETDIR\fR
\&...
.RE
.PP
default direct behaviour (local file operations/rsync)
.RS 4
\ \&
\fBlsyncd\fR
[\fIOPTIONS\fR] \-direct
\fISOURCEDIR\fR
\fITARGETDIR\fR
\&...
.RE
.SH "DESCRIPTION"
.sp
Lsyncd(1) watches local directory trees through an event monitor interface (inotify, fsevents)\&. It aggregates and combines events for a few seconds and then spawns one or more processes to synchronize the changes\&. By default this is rsync(1)\&. Lsyncd is thus a light\-weight asynchronous live mirror solution that is comparatively easy to install not requiring new filesystems or block devices and does not hamper local filesystem performance\&.
.sp
Rsync+ssh is an advanced action configuration that uses a SSH(1) to act file and directory moves directly on the target instead of re\-transmitting the move destination over the wire\&.
.sp
Fine\-grained customization can be achieved through the CONFIG\-FILE\&. Custom action configs can even be written from scratch in cascading layers ranging from shell scripts to code written in the LUA(1) language\&. This way simplicity can be balanced with powerfulness\&. See the online manual for details on the CONFIG\-FILE https://axkibe\&.github\&.io/lsyncd/manual/config/file/ \&.
.sp
Note that under normal configuration Lsyncd will delete pre\-existing files in the target directories that are not present in the respective source directory\&.
.SH "OPTIONS"
.PP
\fB\-delay\fR \fISECS\fR
.RS 4
Overrides the default delay times\&.
.RE
.PP
\fB\-help\fR
.RS 4
Show a help message\&.
.RE
.PP
\fB\-insist\fR
.RS 4
Continues start up even if rsync cannot connect\&.
.RE
.PP
\fB\-log\fR \fILEVEL\fR
.RS 4
Controls which kind of events are logged\&. By default Lsyncd logs
\fINormal\fR
and
\fIError\fR
Messages\&.
\fB\-log scarce\fR
will make Lsyncd log Error messages only\&.
\fB\-log all\fR
will log all debug messages\&.
.RE
.PP
\fB\-log\fR \fICategory\fR
.RS 4
Turns on a specific debug message\&. E\&.g\&.
\fB\-log Exec\fR
will log all processes as they are spawned\&.
.RE
.PP
\fB\-nodaemon\fR
.RS 4
Lsyncd will not detach from the invoker and log as well to stdout/err\&.
.RE
.PP
\fB\-pidfile\fR \fIFILE\fR
.RS 4
Lsyncd will write its process ID in
\fIFILE\fR\&.
.RE
.PP
\fB\-runner\fR \fIFILE\fR
.RS 4
Makes the Lsyncd core load the part of Lsyncd written in Lua from
\fIFILE\fR\&.
.RE
.PP
\fB\-version\fR
.RS 4
Writes version information and exits\&.
.RE
.SH "EXIT STATUS"
.PP
\fB(128+SIGNUM)\fR
.RS 4
Terminated by Signal (143 by TERM)
.RE
.PP
\fB\-1\fR
.RS 4
Failure (syntax, unrecoverable error condition, internal failure)
.RE
.SH "SEE ALSO"
.sp
Online Manual: https://lsyncd\&.github\&.io/lsyncd/
.SH "VERSION"
.sp
This man page is for lsyncd(1) version 2\&.2\&.0
.SH "AUTHOR"
.sp
Axel Kittenberger, <axkibe@gmail\&.com> 2010\-2017 Daniel Poelzleithner, <poelzleithner@b1\-systems\&.de> 2021\-2023
.SH "COPYING"
.sp
Copyright (C) 2010\-2017 Axel Kittenberger\&. Free use of this software is granted under the terms of the GNU General Public License (GPL) version 2, or any later version\&. Free redistrubition of this Documentation (/doc directory) is granted under the terms of the Creative Commons 3\&.0 Attribution License (CC\-3\&.0\-BY)\&.
